Just wanted to show mine as well, even though we have lots of images from wayboarder.
Car felt extremely balanced with the LiPo on one side. I actually bought and saddle LiPo to put in the car (I race in the US, ROAR considers the 4800 Trakpower saddle legal) - but it was less work to use the stick pack.
I even switched back to the original chassis (cut out a slot for the motor myself) - it was easier to mount electronics. I've used both chassis with this set up and felt no difference between the two. Nick